1. MICE TECHNICAL UPDATE & ISIS/RAL PLANS

2. Belgium Italy Japan The Netherlands Russian Federation Switzerland UK USA Acknowledge

3. RAL & ISIS ISIS Harwell RAL

4. Plant…. Control room… Electronics…. Location

5. ISIS Ring

6. Experimental Hall Hall: L = 47 m W = 12 m H = 8 m S = 564 m 2 V = 4512 m 3 Two overhead cranes (8 tonnes each)

7. Mice Hall Existing Area & Beam Line -- is still there - as seen in Summer -- Beam Line used to end of year

8. Mice Layout

9. Technical Update & Issues Beam Line RF System Absorbers Magnets & Cryogenics Detectors Infrastructure & Layout RAL & ISIS Perspectives Programme Expected Progress

10. MICE Layout

11. Beam Line P  < 400 MeV/c Rejection of protons and pions <10% few muons per  s Two solutions: –solenoid »cryogenics availability »release by PSI –quadrupoles

12. Purity

13. Performance Rate depends on muon momentum: e.g. at 200 MeV/c 3000 / ms for solenoid ~300 /ms in quadrupole (assumed a Ti wire target: 1cm long and 4mm Ø) Purity should be better than 90% against scattered protons

14. RF System Cooling Channel Envelope Absorber Tuning Bellows RF Cavity Cavities Raft Solenoid Magnet 1 MW per cavity 8MW total Low Duty Factor 1-2 ms 1-10 Hz average power ~1kW/Hz

15. ~ RF Drive TH116 TH781 RS2058 EX SPS 7651 EX RAL LEVEL CONTROL SOURCE OTHER DRIVE CHAIN 10mW4kW 40kW 400kW4MW DRIVE TO 4 CAVITIES VIA PHASE SHIFTERS AND 70db COUPLERS POWER SPLITTERS AND CIRCULATORS 40 kV20 kV 12kV 5kV R.A. Church RAL - a possible scheme

16. Absorber I Liquid Hydrogen – Major safety issue –ISIS Liquid Hydrogen Moderator

17. Absorber II

18. Absorber III

19. Absorber IV

20. Magnets & Cryogenics Principle Issues – Fringe Fields – Cryogenic Requirements Blue contours: 10 mT Orange: 0.5 mT

21. Detectors Issues: SiFi - Large cyro cooling needed for VLPCs TPG – HV & flamable gas (next to Lig.H cell)

22. Infrastructure Plant:Electrical Power Cooling Power Cryogenic System Hydrogen Delivery & Handling Installation phased build of the experiment

23. ISIS Perspective Critical Issues: Beam Line Long Shutdown Break into ISIS Synchrotron from MICE Hall Have Shielding available+ Have Stands available Competes with other ISIS projects 300  A upgrade* Second Target Station* RFQ Installation delivery of contracted neutron amp.hours * work in synch. vault +2 nd target station – friend or foe?

24. ISIS Schedule

25. Expected Progress Proposal submitted expect the review to take place Mid Feb till May (?) - international review panel MICE is part of the UK’s Science road map - but funds are not yet allocated Internal Review  green light following international rp Management & Oversight Structure(s) need to be in place